/*
 * File     : AutoFree.java
 * Created  : 24 Apr 2011
 *
 * Copyright © 2011 Matthew Wilson (mj. {my-surname} .uk {at} gmail.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.googlecode.dni.internal;

import static com.googlecode.dni.internal.DniInternal.DEBUG_MODE;
import static com.googlecode.dni.internal.DniInternal.LOGGER;

import java.util.logging.Level;

import com.googlecode.dni.type.NativeObject;


/**
 * <p>
 *  Automatically frees memory when finalized.
 * </p>
 *
 * @author Matthew Wilson
 */
public final class AutoFree
{

    private final NativeObject owner;

    /**
     * @param owner
     *            the owner
     */
    public AutoFree( final NativeObject owner )
    {
        this.owner = owner;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void finalize() throws Throwable
    {
        if ( DEBUG_MODE && LOGGER.isLoggable( Level.FINER ) )
        {
            LOGGER.fine( "Freeing: " + this );
        }
        try
        {
            MemoryAccess.ALLOCATOR.free( this.owner.pointer() );
        }
        catch ( Throwable throwable )
        {
            LOGGER.log( Level.SEVERE, "Failed to finalize object: " + this.owner, throwable );
        }
    }

}
